Atp-Pc System

Topics: Adenosine triphosphate, Cellular respiration, Glycolysis Pages: 4 (1135 words) Published: September 1, 2012
Energy Systems and its Production|
Alan Antony|

Adenosine triphosphate (ATP) is the usable form of chemical energy for muscular activity. It is stored in most cells, particularly in muscle cells. Other forms of chemical energy, such as that available from the foods we eat, must be transferred into ATP form before they can be utilized by the muscle cells.|

Since energy is released when ATP is broken down, energy is required to rebuild or resynthesize ATP. The building blocks of ATP synthesis are the by-products of its breakdown; adenosine diphosphate (ADP) and inorganic phosphate (Pi). The energy for ATP resynthesis comes from three different series of chemical reactions that take place within the body. Two of the three depend upon the food we eat, whereas the other depends upon a chemical compound called phosphocreatine. The energy released from any of these three series of reactions is coupled with the energy needs of the reaction that resynthesizes ATP. The separate reactions are functionally linked together in such a way that the energy released by the one is always used by the other than anise.

There are 3 different energy systems:
1. ATP-PC system (Phosphate system) – This system is used only for very short duration of up to 10 seconds. The ATP-PC system neither uses oxygen uses nor produces lactic acid if oxygen in unavailable and is thus said to be alactic anaerobic. This is the primary system behind very short, powerful movements like a golf swing, a 100 metre sprint or powerlifting. 2. Anaerobic system (Lactic Acid system) – Predominates in supplying energy for exercises lasting less than 2 minutes. Also known as the Glycolytic System. An example of an activity of the intensity and duration that this system works under would be a 400 metre sprint. 3. Aerobic system – This is the long distance energy system. By 5 minutes of exercise the O2 system is clearly the dominant...
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